Removable fire-box.



Hl W- JACOBSt REMOVABLE FIRE BOX.

APPLICATION F1LED APR.'25, 1913.

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gigi M16/0606 H. w. JACOBS.

REMOVABLE FIRE BOX.

APPLICATION FILED APR.25, 1913.

Patented Feb. 13, 1917.

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H. W. JACOBS.

REMOVABLE'FIRE BOX.

APPLICATION rlLEn APR.25,1913.

Patented Feb. 13, 1917.

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H. w. lAcoBs. ,REMOVABLE FIRE BOX.

APPLICATION FILED APR-25| l9j3.

Patented Feb. 13, 1917.

4 SHEETS-SHEET 4.

M man 02 me Nonms Pzrsn-s co., #Murau-rua, wAsmNc um, n. c,

HENRY VJ. JACOBS, OF TOPEKA, KANSAS.

REMOVABLE FIRE-BOX.

Specification of Letters Patent.

Patented lFeb. 13, 191i?.

Application led April 25, 1913. Serial No. 763,502.

To all t0/0m t may concern.'

Be it known that l, HENRY W. JACOBS, of Topeka, in the county of Shawnee, and in the State of Kansas, have invented a certain new and useful Improvement in Removable Fire- Boxes, and do hereby declare that the following is a full, clear, and exact description thereof.

While my inventionis applicable to fireboxes of many different kinds, it relates particularly to an improvement in locomotive fire-boxes.

The object of my invention is to provide a fire-box such for example as a locomotive fire-box which is equipped with an outside wrapper sheet divided into panels that can be readily removed from the fire-box without disturbing the stay membersl of the lireboX. A further object of my invention is to provide a fire-box which is capable of movement in a vertical direction under the inuence of changes in temperature causing expansion and contraction, irrespective of the wrapper sheet, while permitting at the saine time th-e longitudinal expansion and contraction of the lire-box irrespective of the wrapper sheet. Y

While my invention is capable of emboeiment in many dierent forms, for the purpose of illustration I have shown only one form thereof in the accompanying drawings in which:

IFigure 1 is a side elevation of a lire-box made in accordance with my invention, part of one of the outer panels being broken away,

Fig. 2 is a longitudinal vertical sect' n of the same, `v"`f`i Fig. 3 is a view of the upper rear portion of the fire-box in longitudinal section showing a modification of theconstruction appearing in Fig. 2,

Fig. l is a vertical transverse section of a fire-box made in accordance with my in` vention,

Fig. 5 is a of the same,

Fig. 6 is a vertical section of a modified form of fire-box, the same being taken in the same plane as Fig. 4,

Fig. 7 is a perspective view of a portion of one of the stay plates,

Fig. 8 is a plan view of one of the plates nsed for locking the fire-box sections to the outer panels,

perspective view of a portion F ig. 9 is a side elevation of the same, and i ig. 10 is an end view of the same.

In the drawings I have shown a fire-box made up of a plurality of sections l, each of said sections being made approximately U- shaped in cross section and bent so as to conform to the desired cross sectional. shape of the fire-box as shown in Fig. 1. The fire-box sections l are riveted together along the flanges located at the sides thereof, stay sheets 2 being interposed between the flanges at the sides of the fire-box, the same being extended to form bracing plates between the flanges at the crown of the firebox, the bracing plates having flanges 3 at the upper edge thereof. lt will be noted that the stay sheets 2 have a plurality of heads or projections -l for a purpose to be hereinafter described. At their lower ends the fire-box sections 1 are flattened to lie evenly against the inner face of a mud ring 5, the joints between the sections being welded together. The front end of the fireboX is closed by a flue sheet 6, which is riveted at its top and side edges to the adjacent fire-box section 1, its bottom edge being riveted to the mud ring 5. The flue sheet 6 has a number of holes 7 receiving a It will be noted that this flue sheet 6 also carries a number of stay bolts 9 connecting the same with a throat sheet 10. The back end of the fire boX is closed by a door sheet 11, which is riveted at its top and side edges to the edges of the adjacent nre-box section 1, and which is riveted at its bottom edge to the mud ring 5. The door sheet 11 is connected to a back head l2 bv a plurality of stay bolts 13. The door sheet 11 has a dooropening l1a in the usual ma nner. A wrapper sheet is provided for the fire-box which comprises a number of longitudinal panels extending the full length of the fire-boX, the same comprising a crown panel 14.- riveted along its side edges to a pair of side panels 15 by means of lap joints 16. The joints 16 are located at a sufficient elevation to give access to the inside of the fire-box to permit riveting and calking when one of the side panels 15 has been removed. The rear edge of the crown panel 14 is riveted to an inwardly extending flange 17, located upon the back head 12 and the front edge thereof is riveted to a boiler shell 18. ln vthe modification shown in Fig. 3 1 have provided a different form of conseries of fire-tubes 8.

neetion between the back head and the panels. 1n this modification 1 have provided a back head 17- which has an outwardly extending flange connectedto the panels instead of an inwardly extending ange as in the case of the form shown in Fig. 2.

lt will be noted that the crown sheet 14 and the portions of the upper side panels 15 located above the fireebox sections 1 are semicircular in cross section and therefore do not require any means for staying the same. Furthermore the crown of the lire-box is sufficiently reinforced by the bracing plates having flanges 3 to avoid the necessity of any further bracing means. ln order to furtherstrengthen the top of the fire-box and the crown panel 14 l may, however, use a plurality of stays 17b having yokes 17 at their lower ends to extend over the flanges 3 and being connected at their upper ends to brackets 1T riveted to the crown panel 14. The stays 17b mayl` if desired, be provided with tightening means 17'c in order to tighten the stays after they have been placed into position. The stays 171 are, of course, placed into position and tightened before the side panels 15 are secured in place. The water space above the top of the fire-box is, thus left substantially entirely open and unobstructed to render the crown of the fire-box easily accessible for inspec` tion and repairs. rlhis space is left entirely open, except for the presence of the stays 1'?b and a plurality of braces 19, which are riveted at their upper ends to the crown panel 14 and which are attached at their lower ends to brackets 20 riveted to the back head 12.

rlhe upper side panels 15 have secured to the inner face thereof a series of pads 217 made in the shape of looped plates, having projecting lugs 22 extending from the sides of the plates. The pads 21 are connected to the wrapper sheet by studs 28, screw threaded to the pads and the wrapper sheet. and riveted on their ends. The purpose of the lugs 22 is to receive the heads 4 located on the stay sheets. A certain amount of play is allowed between the heads 4 and the walls of the recesses formed behind the lugs 22 in order to permit the parts to be readily assembled and also permit relative expansion and contraction.

Each of the upper side panels 15 has a flange 25 at its lower edge to which is riveted a reinforcing plate 26 having a series of recesses 27 to receive those of the heads 4 upon the stay sheets 2 which are lo cated at this elevation. The reinforcing plates 26 are secured between the flanges 25 of the upper side panels 15 and similar flanges 27 located 'upon a pair of lower side panels 28. rllhe lower side panels 28 are provided with pads 21 in the same manner as the upper side panels 15, said pads 28 be ing provided to interlock with heads 4 located upon the stay plates 2. The side panels 15 and 28 are cut to such a shape that a center line drawn through a vertical row of sockets behind the lugs 22 will be either a straight line or an arc of a circle in order that the lugs 22 may be slipped over the stay sheet heads 4 without rendering necessary the presence of an undue amount of clearance.

In Fig. 6 I have shown instead of the flat panels alreadyv described, a corrugated panel 29 having inwardly directed corrugaticns 30 between the pads 21.

In assembling the fire-box, the fire-box sections 1 are riveted together along the flanges located at their edges7 the bracing plates 4 being inserted between the flanges at the crown of the fire-box and the stay plates being inserted between the flanges at the sides of the hre-box. The `flue sheet 6 and the door sheet 11 are then secured tctho lire-box by being riveted to the adjacent fire box sections. The lower ends of the firebox sections 1 are flattened and laid up to the mud ring 5 and the joints between the same welded together. Rivet holes are drilled through the lower ends of the firebox sections 1 and the bottom edges of the flue sheet 6 and the door sheet 11 corresponding to the holes previously drilled in the mud ring 5. Temporary bolts are then inserted in some of these holes to hold the mud ring temporarily in place. The throat sheet 1() and back head 12 are then bolted into place temporarily. The loi/ver side panels 28 having secured thereto the pads 21 are next placed into position against the side of the fire-box so that the stay sheet heads 4 rest against the inner face of the panel 28 in the spaces between the pads 21. rlhe lower side panels 28 are then moved downwardly until the heads 4 are forced behind the projecting lugs 22. rlhe reinforcing plates 26 and the upper side panels 15 are next put in place in a similar manner, the flanges 25 and 27 and the reinforcing plates 26 being riveted together after the upper side panels 15 and reinforcing plates 26 have been moved into position. rlhe rear edges of the upper and lower side panels 15 and 28 are then riveted to the flange 17 upon the back head 12 and the front edges of said side panels are riveted to the throat sheet 10. The crown panel 14, to which crown brackets 17d have been riveted7 is next placed into position and its edges riveted to the upper edges of the upper yside panels 15, its rear edges being then riveted to the flange 17 upon the back head 12 on the back head 17 The braces 19 and the removable cro-wn stays 12'b are placed in position immediately after the crown sheet 14 has been secured in place. Thereafter mud ring rivet holes si l are drilled through the bottom edges of the lower side panels 28 and all the mud ring rivets are then placed in position around the entire lire-box. rIhe back head stay bolts 13 and the flue sheet stay bolts 22 are then inserted and secured in place. The front of the tire-box may be then riveted to the boiler shell 18 in the usual manner. If desired, however, the stay platesmay be secured to the wrapper sheet in any other desired manner, as for instance, by securing them directly to the wrapper sheet.

I/Vhile I have shown and described my invention in detail I wish it to be understoot that many changes may be made therein without departing from the spirit of my invention.

I claim:

l. In a lire-box construction the combination oi a fire-box and a wrapper sheet curved in the upper portion thereof made up-of a plurality of sections comprising a crown panel and side panels, the lower ends of the side panels being located at the two lower ends of said curved portion, and the fire-box and wrapper sheet having means adapted to be engaged by movement transversely of the tire-box.

2. In a fire-box construction the combination of a. lire-box and a wrapper sheet curved in the upper portion thereof made up of a plurality of sections comprising a crown panel, the edges of which are higher than the top of the crown of the fire-box and side panels, the lower ends of the side panels being located at the two lower ends of said curved portion, and the iire-box and wrapper sheet h aving means adapted to be engaged by movement transversely of the lirebox.

3. In a lire-box construction the lcombination of a fire-box and a wrapper sheet curved in the upper portion thereof made up of a plurality of sections comprising a crown panel and a plurality of side panels, the lower ends of the side panels being located at the two lower ends of said curved por tion, and the lire-box and wrapper sheet having means adapted to be engaged by movement transversely of the fire-box.

4. In a tire-box construction the combination of a. lire-box and a wrapper sheet, curved in the upper portion thereof made up of a plurality of sections comprising a crown panel, the edges of which are higher than the top of the crown of the fire-box and a plurality of side panels, the lower ends of the side panels being. located at the two lower ends of said curved portion, and the re-boX and wrapper sheet having means adapted to be engaged by movement transversely of the lire-box.

5. In a lire-box construction the combination of a lire-box and a wrapper sheet made up of a plurality of sections, the fire-box and wrapper sheet having interlocking projections and recesses adapted to be engaged by a movement of the wrapper sheet parallel to and transversely of the fire-box.

6. In a. lire-box construction the com-bination of a fire-box and a wrapper sheet made up of a plurality of sections comprising a crown panel and side panels, the lire-box and wrapper sheet having interlocking pro` jections and recesses adapted to be engaged by a movement of the wrapper sheet parallel Vto and transversely of the tire-box.

7. In a fire-box construction the combination of a fire-box and a wrapper sheet made up of a plurality of sections comprising a crown panel, the edges of which are higher than the top of the crown of the tire-box and side panels, the tire-box and wrapper sheet having interlocking projections and recesses adapted to be engaged by a movement of the wrapper sheet parallel to and transversely of the fire-box.

8. In a fire-box construction the co1nbina tion oi' a fire-box and a wrapper sheet made up of a plurality of sections, the lire-box and` wrapper sheet having interlocking projections and recesses adapted to be engaged by a movement of the wrapper sheet parallel to fire-box, the same comprising pads with lugs secured to the wrapper sheet and heads located on stay sheets secured to the fireboX.

9. In a lireebox construction the combination of a fire-box and a wrapper sheet made up of a plurality of sections comprising a v crown panel and side panels, the iire-boa and wrapper sheet having interlocking projections and recesses adapted to be engaged by a movement of the wrapper sheet parallel to tire-box, the same comprising pads with lugs secured to the wrapper sheet and heads located on stay sheets secured to theI lire-box.

l0. In a fire-box construction the combination of a fire-box and a wrapper sheet made up of a plurality of sections comprising a crown panel, the edges of which are higher than the top of the crown of the fireboi: and side panels, the tire-box and wrapper sheet having interlocking projections and recesses adapted to be engaged by a movement of the wrapper sheet parallel to lire-box, the same comprising pads with lugs secured to the wrapper sheet and heads located on stay sheets secured to the ireboX.

ll. In a fire-box construction the combination of a lire-box made up of a plurality lof sections and a wrapper sheet made up of a plurality of sections, the lire-box and wrapper sheet having interlocking projections and recesses adapted to be engaged by a movement of the wrapper sheet parallel to fire-box, the same comprising pads with lugs secured to the wrapper sheet and heads located on stay sheets secured to the fire-box, and located. between the fire-box sections.

12. In a fire-box construction the combination of a lire-box made up of a plurality of sections and a wrapper sheet made up of a plurality of sections comprising a crown panel and side panels, the fire-box. and wrapper sheet having interlocking projections and recesses adapted to be engaged by a movement of the wrapper sheet parallel to lire-box, the same comprising pads with lugs secured to the wrapper sheet and heads located on stay sheets secured to the fireboX, and located between the fire-box sections.

18. 1n a fire-box construction the combination of a fire-box made up of a plurality of sections and a wrapper sheet made up of a plurality of sections comprising a crown panel, the edges of which are higher than the top of the crown of the fire-box and side panels, the fire-box and wrapper sheet having interlocking projections and recesses adapted to be engaged by a movement of the wrapper sheet parallel to fire-box, the same comprising pads with lugs secured to 'the wrapper sheet and heads located on stay sheets secured to the fire-box, and located between the hre-box sections.

14. In a fire-box construction the combination of a lire-box made up of a plurality7 of sections and a wrapper sheet made up of a plurality of sections comprising a crown panel, the edges of which are higher than the top of the crown of the {ire-box and a plurality of side panels, the lire-box and wrapper sheet having interlocking projections and recesses adapted to be engaged by a movement of the wrapper sheet parallel to fire-box, and located between the fire-box sections.

15. In a fire-box construction the combination of a fire-box and'a wrapper sheet made up of a plurality of sections, the fireboX and wrapper sheet having interlocking projections and recesses adapted to be engaged by a movement of the wrapper sheet parallel to fire-box comprising a reinforcing plate secured to the wrapper sheet and heads located on stay sheets secured to the firebox.

16. In a fire-box construction the combination of a fire-box and a wrapper sheet made up of a plurality of sections comprising a crown panel and side panels, the fire-box and wrapper sheet having interlocking projec- Copies of this patent may vsections 1may be obtained for ive cents each, by addressing' naif-.5,127

tions and recesses adapted to be engaged by a movement of the wrapper sheet parallel to lire-box comprising a reinforcing plate secured to the wrapper sheet and heads located on stay sheets secured to the fire-box.

17. ln a fire-box construction the combination of a fire-box and a wrapper sheet made up of a plurality of sections comprising a crown panel, the edges of which are higher than the top of the crown of the fireboX and side panel, the fire-box and wrapper sheet having interlocking projections and recesses adapted to be engaged by a movement of the wrapper sheet parallel to hre-box comprising a reinforcing plate secured to the wrapper sheet and heads located on stay sheets secured to the fire-box.

18. ln a fire-box construction the combination of a fire-box and a wrapper sheet made up of a plurality of sections comprising a crown panel and upper and lower side penels, the fire-box and wrapper sheet having interlocking projections and recesses adapted to be engaged by a movement of the wrapper sheet parallel to fire-box comprising a reinforcing plate secured to the wrapper sheet and heads located on stay sheets secured to the re-box.

19. ln a fire-box construction the combination of a fire-box and a longitudinally corrugated wrapper sheet interlocking with the fire-box and made up of a plurality of panels comprising a crown panel and a plurality of side panels, one of said panels being curve in cross-section on a circle of a given radius. 20. ln combination, a fire box and a sectional wrapper having parts engageable therewith by movement of the wrapper transverse to the fire-box, sections of said wrapper being conformed to the shape of the adjacent portion of the re-box, whereby said be slid into place to inclose such portions of the fire-box.

21. In combination, a fire-box having a curved portion, and a wrapper having a section provided with parts engageable with said portion by movement transverse to the hre-box, said section being conformed to the shape of said curved portion.

ln testimony that l claim the foregoing l have hereunto set my hand.

i HENRY W. JACOBS. Witnesses:

L. BRODERICK, J. FREUDnNvoLL.

Washington, D. C.

the Commissioner of Patents,

deo 

